From the day his parents named him, Nasa Yuzaki has felt connected to outer space...whether he likes it or not. His efforts to outperform the space program veer off course when an accident introduces him to Tsukasa, a mysterious girl with strange powers. Is she an alien, a moon goddess or something else? Since she insists on marrying him, Nasa will have plenty of chances to find out!

Nasa has been introduced to Tsukasa's family...sort of. Now it's time for Tsukasa to meet her in-laws! Nasa is determined to do whatever it takes to make a long bus ride romantic, while Tsukasa is just happy to check out food courts along the way. Little do they know that Chitose and her maids are on their tail, bent on turning their quickie honeymoon into a quickie divorce!